package phoeics.authoryserver;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import phoeics.authoryserver.webservice.security.LoginFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter{
	//private static org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(WebSecurityConfig.class);
	@Autowired
	private UserDetailsService userDetailsService;

	@Autowired
	 public void configureAuthentication(AuthenticationManagerBuilder authenticationManagerBuilder) throws Exception {
		 authenticationManagerBuilder
		// 设置UserDetailsService
         .userDetailsService(this.userDetailsService)
         // 使用BCrypt进行密码的hash
         .passwordEncoder(passwordEncoder());
	 }
	// 装载BCrypt密码编码器
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
    @Override
    @Bean
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity
                //这里不需要csrf
                .csrf().disable()
                // 基于token，所以不需要session
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
                .authorizeRequests()
                //.antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
                // 允许对于网站静态资源的无授权访问
                .antMatchers(
                        HttpMethod.GET,
                        "/",
                        "/*.html",
                        "/favicon.ico",
                        "/**/*.html",
                        "/**/*.css",
                        "/**/*.js",
                        "/api/**"
                ).permitAll()
                // 对于获取token的rest api要允许匿名访问
                .antMatchers("/auth/**").permitAll()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated()
                .and()
                .addFilterBefore(new LoginFilter("/auth/login", authenticationManager()),UsernamePasswordAuthenticationFilter.class);
          
        // 禁用缓存
        httpSecurity.headers().cacheControl();
    }

}
